1/**********************************************************
2 * Copyright 2008-2009 VMware, Inc.  All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 **********************************************************/
25
26#include "draw/draw_context.h"
27#include "util/u_inlines.h"
28#include "util/u_math.h"
29#include "util/u_memory.h"
30#include "util/u_bitmask.h"
31#include "tgsi/tgsi_parse.h"
32#include "tgsi/tgsi_text.h"
33
34#include "svga_context.h"
35#include "svga_tgsi.h"
36#include "svga_hw_reg.h"
37#include "svga_cmd.h"
38#include "svga_debug.h"
39
40
41static const struct tgsi_token *substitute_vs(
42   unsigned shader_id,
43   const struct tgsi_token *old_tokens )
44{
45#if 0
46   if (shader_id == 12) {
47   static struct tgsi_token tokens[300];
48
49   const char *text =
50      "VERT\n"
51      "DCL IN[0]\n"
52      "DCL IN[1]\n"
53      "DCL IN[2]\n"
54      "DCL OUT[0], POSITION\n"
55      "DCL TEMP[0..4]\n"
56      "IMM FLT32 {     1.0000,     1.0000,     1.0000,     1.0000 }\n"
57      "IMM FLT32 {     0.45,     1.0000,     1.0000,     1.0000 }\n"
58      "IMM FLT32 { 1.297863, 0.039245, 0.035993, 0.035976}\n"
59      "IMM FLT32 { -0.019398, 1.696131, -0.202151, -0.202050  }\n"
60      "IMM FLT32 { 0.051711, -0.348713, -0.979204, -0.978714  }\n"
61      "IMM FLT32 { 0.000000, 0.000003, 139.491577, 141.421356 }\n"
62      "DCL CONST[0..7]\n"
63      "DCL CONST[9..16]\n"
64      "  MOV TEMP[2], IMM[0]\n"
65
66      "  MOV TEMP[2].xyz, IN[2]\n"
67      "  MOV TEMP[2].xyz, IN[0]\n"
68      "  MOV TEMP[2].xyz, IN[1]\n"
69
70      "  MUL TEMP[1], IMM[3], TEMP[2].yyyy\n"
71      "  MAD TEMP[3], IMM[2],  TEMP[2].xxxx, TEMP[1]\n"
72      "  MAD TEMP[1], IMM[4], TEMP[2].zzzz, TEMP[3]\n"
73      "  MAD TEMP[4], IMM[5], TEMP[2].wwww, TEMP[1]\n"
74
75      "  MOV OUT[0], TEMP[4]\n"
76      "  END\n";
77
78   if (!tgsi_text_translate( text,
79                             tokens,
80                             Elements(tokens) ))
81   {
82      assert(0);
83      return NULL;
84   }
85
86   return tokens;
87   }
88#endif
89
90   return old_tokens;
91}
92
93
94/***********************************************************************
95 * Vertex shaders
96 */
97
98static void *
99svga_create_vs_state(struct pipe_context *pipe,
100                     const struct pipe_shader_state *templ)
101{
102   struct svga_context *svga = svga_context(pipe);
103   struct svga_vertex_shader *vs = CALLOC_STRUCT(svga_vertex_shader);
104   if (!vs)
105      return NULL;
106
107   /* substitute a debug shader?
108    */
109   vs->base.tokens = tgsi_dup_tokens(substitute_vs(svga->debug.shader_id,
110                                                   templ->tokens));
111
112
113   /* Collect basic info that we'll need later:
114    */
115   tgsi_scan_shader(vs->base.tokens, &vs->base.info);
116
117   {
118      /* Need to do construct a new template in case we substitued a
119       * debug shader.
120       */
121      struct pipe_shader_state tmp2 = *templ;
122      tmp2.tokens = vs->base.tokens;
123      vs->draw_shader = draw_create_vertex_shader(svga->swtnl.draw, &tmp2);
124   }
125
126   vs->base.id = svga->debug.shader_id++;
127
128   if (SVGA_DEBUG & DEBUG_TGSI || 0) {
129      debug_printf("%s id: %u, inputs: %u, outputs: %u\n",
130                   __FUNCTION__, vs->base.id,
131                   vs->base.info.num_inputs, vs->base.info.num_outputs);
132   }
133
134   return vs;
135}
136
137static void svga_bind_vs_state(struct pipe_context *pipe, void *shader)
138{
139   struct svga_vertex_shader *vs = (struct svga_vertex_shader *)shader;
140   struct svga_context *svga = svga_context(pipe);
141
142   svga->curr.vs = vs;
143   svga->dirty |= SVGA_NEW_VS;
144}
145
146
147static void svga_delete_vs_state(struct pipe_context *pipe, void *shader)
148{
149   struct svga_context *svga = svga_context(pipe);
150   struct svga_vertex_shader *vs = (struct svga_vertex_shader *)shader;
151   struct svga_shader_result *result, *tmp;
152   enum pipe_error ret;
153
154   svga_hwtnl_flush_retry( svga );
155
156   draw_delete_vertex_shader(svga->swtnl.draw, vs->draw_shader);
157
158   for (result = vs->base.results; result; result = tmp ) {
159      tmp = result->next;
160
161      ret = SVGA3D_DestroyShader(svga->swc,
162                                 result->id,
163                                 SVGA3D_SHADERTYPE_VS );
164      if(ret != PIPE_OK) {
165         svga_context_flush(svga, NULL);
166         ret = SVGA3D_DestroyShader(svga->swc,
167                                    result->id,
168                                    SVGA3D_SHADERTYPE_VS );
169         assert(ret == PIPE_OK);
170      }
171
172      util_bitmask_clear( svga->vs_bm, result->id );
173
174      svga_destroy_shader_result( result );
175
176      /*
177       * Remove stale references to this result to ensure a new result on the
178       * same address will be detected as a change.
179       */
180      if(result == svga->state.hw_draw.vs)
181         svga->state.hw_draw.vs = NULL;
182   }
183
184   FREE((void *)vs->base.tokens);
185   FREE(vs);
186}
187
188
189void svga_init_vs_functions( struct svga_context *svga )
190{
191   svga->pipe.create_vs_state = svga_create_vs_state;
192   svga->pipe.bind_vs_state = svga_bind_vs_state;
193   svga->pipe.delete_vs_state = svga_delete_vs_state;
194}
195
196